{"product_id":"value-collection-jy4887378-hand-tap-3-8-uns-bottoming-hss","title":"Value Collection JY4887378 Hand Tap 3\/8 Uns Bottoming Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION JY4887378 is a straight-flute hand tap designed for cutting 3\/8-inch UNS (Unified National Special) internal threads in through-holes and blind holes requiring a bottoming chamfer. Built from high speed steel (HSS) with a bright, uncoated finish, this tap delivers reliable thread-cutting performance in ferrous and non-ferrous materials. The 8-flute design provides increased cutting edge contact, which helps distribute cutting forces and supports consistent thread form. Overall length is 9.75 inches with a 4.5625-inch thread length. Licensed machinists, tool and die makers, and maintenance technicians use this tap for manual threading operations requiring full thread depth to the bottom of a blind hole.\u003c\/p\u003e\u003cp\u003eThis tap is suited for production and maintenance applications where UNS thread forms are specified. The bottoming chamfer — typically 1 to 2 threads of lead — allows the tap to cut threads close to the bottom of a blind hole, making it appropriate for tooling, fixture, and precision component work. It is driven by a standard tap wrench or T-handle and is compatible with H8 thread limit tolerances, which accommodate medium-fit threading applications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBottoming chamfer for threading to the bottom of blind holes\u003c\/li\u003e\n\u003cli\u003eH8 thread limit for medium-fit tolerance control\u003c\/li\u003e\n\u003cli\u003e8-flute straight flute design distributes cutting load across more edges\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction for durability in a range of workpiece materials\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish — no coating buildup to affect dimensional tolerances\u003c\/li\u003e\n\u003cli\u003eRight-hand thread direction, standard drive for tap wrenches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for manual hand tapping of 3\/8-inch UNS threads with an H8 thread limit. Compatible with standard tap wrench drives used in machine shop, maintenance, and toolroom applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is intended for use by machinists and trained technicians performing manual threading operations. Secure the workpiece firmly before tapping and ensure the pilot hole diameter matches the recommended tap drill size for the specified UNS thread. Apply appropriate cutting fluid to reduce friction and extend tap life. Back the tap off periodically to break chips and prevent binding, particularly in deep or blind holes.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Bottoming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Style\u003c\/strong\u003e: Straight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 9.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 4.5625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: VALUE COLLECTION\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: JY4887378\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51697614094642,"sku":"JY4887378","price":1197.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5b307ba48c4f0c344655a540bcc4e48f.jpg?v=1788353439","url":"https:\/\/voomisupply.com\/products\/value-collection-jy4887378-hand-tap-3-8-uns-bottoming-hss","provider":"Voomi Supply","version":"1.0","type":"link"}